M&S says

This two pack of women’s full briefs are a great quality option for unbeatable value for money and will make a great addition to any lingerie collection. The cotton rich fabric is wonderfully soft to touch and the natural fibres provide breathable comfort throughout the entire day. Designed to flatten tummies for a slimmer and more flattering silhouette, these control briefs provide an instant confidence boost, while discreet details such as the scallop trim detail and added bow feature provide a stylish finish.

Care and Composition

35 days to return
You may return unused products within 35 days of purchase with a valid parcel summary document. Your items don't need to be in the original box or bag as long as they're securely packaged.

How to return
Simply use our returns portal to print a returns label and returns note. You will then be able to return all or part of your order at your own cost through your preferred carrier. To create a returns label, visit our returns portal select this option and follow the instructions.